English edit

Alternative forms edit

Etymology edit

From German Feldspath (feldspar) +‎ -oid.

Noun edit

feldspathoid (countable and uncountable, plural feldspathoids)

  1. (mineralogy) Any of a small group of igneous, plutonic, and volcanic minerals formed in magma that did not contain enough silica to satisfy all the chemical bonds. Feldspathoids are silica-poor variants of the feldspar group.

Hyponyms edit

Derived terms edit

Adjective edit

feldspathoid (not comparable)

  1. (mineralogy) Resembling a feldspar.

See also edit